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MR Reference Test Block 2
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MR Reference Test Block 2
Structure of the test block
Field of application
Structure of the test block
The reference test block type 2 is rectangular in shape with dimensions of 155 x 50 x 2,5 mm. The base material is stainless steel plated with a layer of nickel of 60 μm thickness. The nickel layer is plated with a thin layer of hard chromium of 0,5 μm to 1,5 μm thickness. Five starshaped defects of 3,0 to 5,5 mm diameter have been artificially produced in this layer. The five defects are uniformly placed according to their sizes. In order to check washability (visual assessment of excess penetrant removal) the test panel got on the artificial defected side four adjacent areas of 25 x 35 mm dimension with a roughness of Ra = 2,5 μm, Ra = 5 μm, Ra = 10 μm, Ra = 15 μm. The smallest defect is located next to the area showing the smallest roughness.
Field of application
- The reference test block type 2 is used for routine evaluation of the system performance of both colored and fluorescent penetrant testing systems when used in equipment and open containers.
- A comparison is made between the as-used condition and the as-delivered condition. As a rule, the test is to be carried out before each start of work.
- The delivery includes a test certificate and a storage box.
- The reference test block type 2 complies with the requirements of DIN EN ISO 3452-3.